Joe Calzaghe has been warned he "better be willing to die" by Bernard Hopkins ahead of their 19 April light-heavyweight contest in Las Vegas.
Hopkins has made provocative comments to Calzaghe before
Hopkins repeatedly said the phrase to Calzaghe when the two men staged the traditional face off following a press conference on Tuesday.
"I feel in an executioner mood," said Hopkins, who addressed the media wearing a black hood.
"I am going to punish him and punish him slowly."
Undisputed super-middleweight champion Calzaghe, 35, is unbeaten in 44 professional fights.
He laughed off the episode, as he had done before Christmas when Hopkins, 43, Ring Magazine's light-heavyweight champion, claimed during a previous confrontation that he would "never lose to a white boy".
"He's doing what he has to do to psyche himself up," said Calzaghe. "I'm enjoying it. This is a new phase for me, my first fight in the States.
"I came to watch the Ricky Hatton fight against Floyd Mayweather and saw the support he had and that's the only thing missing from my career, a big name, someone like Hopkins and all the bull that surrounds it.
"He can be the bad guy now but I'm going to be the bad guy come 19 April.
"I've been through all this before. I've been undefeated 17 years so nothing intimidates me."